[bejph]

have you tried importing the contacts form the phone to google contacts then syncing then exporting them from there to a file on the computer then importing that into the address book
or you can also go through the info page in itunes for your phone and sync contacts from the phone to the computer that way by checking the box that says sync contact to then select address book

There is a step by step instruction on How to transfer iPhone contacts to my iMac. Hope it can do you a favor.